CN108571169B - Construction method for factory prefabricated steel concrete superposed shear wall assembly type building - Google Patents
Construction method for factory prefabricated steel concrete superposed shear wall assembly type building Download PDFInfo
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- CN108571169B CN108571169B CN201810618335.8A CN201810618335A CN108571169B CN 108571169 B CN108571169 B CN 108571169B CN 201810618335 A CN201810618335 A CN 201810618335A CN 108571169 B CN108571169 B CN 108571169B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
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Abstract
The construction method of the prefabricated building with the factory-prefabricated steel-concrete superposed shear wall comprises the following steps: (1) designing a plurality of sections of steel concrete combined shear walls and connecting steel beams according to the requirements of construction drawings; (2) prefabricating the steel concrete combined pipe in a factory in sections according to the requirements of a drawing; (3) transporting the prefabricated steel concrete composite pipe to a construction site; (4) and constructing layer by layer from bottom to top according to the following procedures. The inner concrete, the outer concrete and the reinforcing mesh form the integral steel-concrete combined shear wall through the tie bars and the steel plate with the ribs on the inner side, and work together, so that the ductility and the compressive strength of the concrete are greatly improved, the plasticity and the toughness of the integral steel-concrete combined shear wall structure are greatly improved, the deformation resistance and the compressive strength of the shear wall are greatly improved, and meanwhile, the fireproof and anticorrosive problems of the steel structure building are effectively solved because the steel plate with the ribs is wrapped in the concrete.
Description
Technical Field
The invention belongs to the technical field of structural engineering, and particularly relates to a construction method for a factory-prefabricated steel concrete superposed shear wall fabricated building.
Background
The components of the assembly type building can be industrially produced in a factory, are equivalent to standard products, can be directly installed when being transported to a site, are convenient and quick, and have incomparable superiority in the building field of contending for minutes and seconds to rush for a project; the components are produced in a standardized way in a factory, the quality is better guaranteed than the components produced on site, the components can be effectively controlled, the high-standard mechanization degree of the components is reduced, the allocation of site personnel is reduced, and the components are helpful in the aspects of labor cost and safe production.
The existing assembly type building components have the following technical problems: 1. the fireproof performance is poor; 2. 3, the corrosion resistance is poor, and the durability of the assembled shear wall structure is poor; 4. the working procedures are complicated during the site construction, and the construction progress is slow; 5. the cost is high.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the construction method for the factory-prefabricated steel concrete superposed shear wall assembly type building, which has the advantages of fire resistance, corrosion resistance, strong structural durability, quick construction progress and lower cost.
In order to solve the technical problems, the invention adopts the following technical scheme: the construction method of the prefabricated building with the factory-prefabricated steel-concrete superposed shear wall comprises the following steps:
(1) designing a plurality of sections of steel concrete combined shear walls and connecting steel beams according to the requirements of construction drawings, wherein the steel concrete combined shear walls are formed by connecting steel concrete combined pipes with rectangular cross sections to form shear walls formed by pouring in-pipe concrete after the cross sections of the pipes are of type I, type II or type III or type □;
(2) prefabricating the steel concrete combined pipe in a factory in sections according to the requirements of a drawing;
(3) transporting the prefabricated steel concrete composite pipe to a construction site;
(4) and constructing layer by layer from bottom to top according to the following procedures: firstly, hoisting the steel concrete combined pipe in place, and sequentially butting the steel concrete combined pipe horizontally and vertically to form a firm and stable structural system; the two sections of horizontally adjacent steel concrete combined shear walls are connected through a field-mounted horizontal connecting structure, and the two sections of vertically adjacent steel concrete combined shear walls are connected through a field-mounted vertical connecting structure; two ends of the connecting steel beam are fixedly arranged between the opposite steel concrete combined shear walls, and two ends of the connecting steel beam are connected with the steel concrete combined shear walls through the node connecting structure; laying a laminated floor slab or a steel bar truss floor bearing plate on the connecting steel beam; pouring inner concrete in an inner cavity of the steel concrete composite pipe, and pouring concrete at the positions of the on-site installation vertical connecting structure, the on-site installation horizontal connecting structure and the node connecting structure; laying steel bars on the surface of a laminated floor slab or a steel bar truss floor support plate and pouring concrete;
the concrete process of prefabricating the steel concrete composite pipe in the step (2) comprises the following steps:
a. cutting a ribbed steel plate or a profiled steel plate with specified length and width according to the requirements of construction drawings;
the ribbed steel plate has several ribs pressed on its surface, each rib has semi-circular, elliptic, triangular and trapezoidal cross section, and is set along the vertical and/or horizontal direction of the steel-concrete composite pipe, and all the ribs are uniformly arranged along the circumferential and/or vertical direction of the steel-concrete composite pipe;
the cross section of the profiled steel sheet is in a shape of triangle, trapezoid, arc, wavy line or fold line;
b. bending the ribbed steel plate or the profiled steel plate into a rectangular cylindrical structure steel plate and welding the rectangular cylindrical structure steel plate at a connecting seam, wherein two long sides of the rectangular structure steel concrete combined pipe are respectively the inner side and the outer side of the rectangular cylindrical structure steel plate, and two short sides of the rectangular structure steel concrete combined pipe are respectively the left side and the right side of the rectangular cylindrical structure steel plate;
c. the inner side surface and the outer side surface of the rectangular cylindrical structural steel plate are respectively provided with a plurality of long holes which are arranged in a rectangular array, and the long holes on the inner side surface and the long holes on the outer side surface of the rectangular cylindrical structural steel plate are in one-to-one internal-external correspondence; the length direction of each long hole is horizontally arranged, the left end and the right end of each long hole are respectively provided with a first arc-shaped groove and a second arc-shaped groove, the diameter of each first arc-shaped groove is equal to the width of the left end of each long hole, and the diameter of each second arc-shaped groove is equal to or larger than the width of the right end of each long hole;
d. the inner end and the outer end of the tie bar extend out of the rectangular cylindrical structural steel plate to two sides respectively, the tie bar is inserted into the two second arc-shaped grooves firstly, and force towards the first arc-shaped grooves is applied to two ends of the tie bar, so that the tie bar moves and is fastened into the two first arc-shaped grooves;
e. the steel bar net piece with the cross section in a rectangular structure is arranged on the periphery of the outer part of the rectangular cylindrical structure steel plate, a gap is formed between the steel bar net piece and the rectangular cylindrical structure steel plate, the inner side surface and the outer side surface of the steel bar net piece are respectively and fixedly connected to the inner end and the outer end of the tie bar, and the left side surface and the right side surface of the steel bar net piece are respectively and fixedly connected with the left side surface and the right side surface of the rectangular cylindrical structure steel plate through studs;
f. respectively pouring outer concrete around the outer part of the rectangular cylindrical structural steel plate to condense the reinforcing mesh; the outer concrete and the reinforcing mesh form a reinforced concrete combined pipe through the tie bars and the rectangular cylindrical structural steel plate.
Further, the field installation horizontal connecting structure in the step (4) comprises a plurality of horizontal rear insertion anchoring ribs, the left side part of the rectangular cylindrical structural steel plate of one horizontally adjacent reinforced concrete combined pipe and the right side part of the rectangular cylindrical structural steel plate of the other horizontally adjacent reinforced concrete combined pipe are exposed outside when being prefabricated in a factory, and a plurality of through holes are uniformly formed in the left side surface or the right side surface of the rectangular cylindrical structural steel plate exposed outside from top to bottom in the factory; when two horizontally adjacent steel concrete combined pipes are butted on site, the right side surface of the rectangular cylindrical structure steel plate of the left steel concrete combined pipe is attached to the left side surface of the rectangular cylindrical structure steel plate of the right steel concrete combined pipe, the through holes are communicated in a one-to-one correspondence manner, the vertical connecting seam between the two rectangular cylindrical structure steel plates is welded, two horizontal rear insertion anchoring ribs are arranged in each through hole in a penetrating manner, the horizontal rear insertion anchoring ribs are horizontally arranged along the left and right directions, and the left and right ends of the horizontal rear insertion anchoring ribs respectively extend into the left and right rectangular cylindrical structure steel plates and are placed on the adjacent tie ribs to be welded or bound with the tie ribs into a whole; welding a plurality of T-shaped nails on the left side and the right side of the welding seam between the inner side and the outer side of each two adjacent rectangular tubular structural steel plates, arranging rectangular small reinforcing meshes on the T-shaped nails, and pouring plugging concrete outside the small reinforcing meshes and the T-shaped nails, wherein the plugging concrete is flush with the surface of the outer concrete; and finally, when the inner concrete is poured, all the horizontal rear insertion anchoring ribs are pre-embedded in the inner concrete, and the inner concrete connects the adjacent steel concrete combined pipes into a whole through the through holes.
Further, the on-site installation of the vertical connecting structure in the step (4) comprises a plurality of vertical rear insertion anchoring ribs and upper welding lug plates, welding otic placode and connection otic placode down, it welds the left side of the one row of drawknot muscle in the bottom of the steel concrete composite tube on upper portion to go up the welding otic placode welding, the left side of the one row of drawknot muscle in the top of the steel concrete composite tube on lower portion is welded to the lower welding otic placode, it all sets up and upper and lower one-to-one with lower welding otic placode to go up the welding otic placode, the left surface of welding otic placode and lower welding otic placode is hugged closely to the connection otic placode, the upper portion of connecting the otic placode passes through connecting bolt and last welding otic placode fastening connection, the lower part of connecting the otic placode passes through connecting bolt and lower welding otic placode fastening connection down, vertical back insert the perpendicular setting of anchor muscle, vertical back insert the left side upper portion of anchor muscle and the right side welding of the one row of drawknot muscle in the bottom of the steel concrete composite tube on upper portion on.
Further, the joint connecting structure in the step (4) comprises an embedded vertical plate, an embedded transverse plate, a welding connecting plate, an embedded reinforcing rib, an upper reinforcing plate and a lower reinforcing plate, wherein the cross section of the connecting steel beam is H or mouth-shaped; the outer side of the steel concrete combined shear wall is reserved with an unfired area, the steel concrete combined tube is provided with a mounting hole corresponding to the unfired area, the embedded vertical plate is matched with the mounting hole in size and is positioned in the mounting hole, the embedded reinforcing ribs and the embedded transverse plates are both arranged inside the steel concrete combined tube along the horizontal direction, the outer ends of the embedded reinforcing ribs and the outer side edges of the embedded transverse plates are both fixedly connected with the inner side surfaces of the embedded vertical plates, the embedded transverse plates are positioned above and below the embedded reinforcing ribs, the welding connecting plates are positioned inside the unfired area and are arranged along the vertical direction, the inner side edges of the welding connecting plates are fixedly connected with the outer side surfaces of the embedded vertical plates, and the welding connecting plates are connected with an intermediate plate for connecting steel beams; go up the lower surface of reinforcing plate and welded connection board's last side fixed connection, the upper surface of reinforcing plate and welded connection board's lower side fixed connection down, go up the inboard side of reinforcing plate and lower reinforcing plate all with the lateral surface fixed connection of pre-buried riser.
Furthermore, when the inner concrete is poured, the tie bars, the vertical rear insertion anchoring bars and the horizontal rear insertion anchoring bars are poured into the inner concrete, and the steel wire mesh sheets, the welding connecting plates, the end parts of the connecting steel beams, the upper welding lug plates, the lower welding lug plates and the connecting lug plates are poured into the outer concrete.
Furthermore, the width of the long hole is consistent from left to right or gradually increased, and the tie bar is made of a twisted steel bar.
By adopting the technical scheme, the invention has the following technical effects:
the steel concrete combined shear wall is formed by connecting steel concrete combined pipes and pouring concrete in the pipes, wherein the steel concrete combined pipes comprise rectangular cylindrical structural steel plates, tie bars, studs, steel bar meshes and external concrete wrapped outside the steel bar meshes, and are all processed and prefabricated in factories; and pouring the inner concrete in the cavity inside the rectangular cylindrical structural steel plate on the construction site.
The rectangular tubular structure steel plate is formed by bending and welding a ribbed steel plate or a profiled steel plate, the ribbed steel plate is pressed by a factory, and the ribbed steel bars of the steel plate not only increase the strength of the steel plate and reduce the thickness of the steel plate, but also increase the binding force of concrete and the steel plate, improve the strength and the anti-deformation capacity of the rectangular tubular structure steel plate, and achieve the purposes of reducing the consumption of steel and saving resources.
The tensile strength and the compressive strength of the member are increased by utilizing the mutual constraint action between the ribbed steel plate or the profiled steel plate and the tie bars, the studs, the reinforcing mesh and the externally wrapped external concrete, and the construction load and the wind load are borne by utilizing the steel concrete combined pipe without pouring the concrete in the pipe in the installation stage, so that the weight of a single member is reduced, and the cost of transportation and hoisting operation is greatly reduced.
The steel concrete combined shear wall structure is formed by casting the inner concrete in the cavity inside the steel concrete combined tube on site. The inner concrete, the outer concrete and the reinforcing mesh form a whole with the steel plate with the inner rib through the tie bars, the geometric stability of the steel plate wall is enhanced by utilizing the constraint action of the inner concrete and the outer concrete, the instability mode of the steel plate with the rib is changed, the local buckling of the steel plate with the rib is avoided or delayed, meanwhile, the strength of the concrete is improved by utilizing the constraint action of the prefabricated rectangular tubular structure steel plate on the concrete, the plasticity and the toughness are greatly improved, and the compressive strength and the ductility are also greatly improved. The assembled structure of the steel-concrete combined shear wall ensures the full play of the performance of all wall materials.
The drawknot muscle inserts the inboard slot hole that corresponds with the outside of rectangle tubular structure steel sheet, and the drawknot muscle penetrates in two second arc walls that are greater than the drawknot muscle diameter earlier, and horizontal migration is in two first arc walls and the fastening is in first arc wall again, and this kind of mounting means is convenient for operate, connects reliably. In addition, because the width of slot hole is all unanimous or crescent and the lacing wire adopts the twisted steel, can improve joint intensity and reliability between lacing wire and the first arc wall like this, ensure that the distance between the inboard and the outside of rectangle tubular structure steel sheet keeps stability. The rectangular cylindrical structural steel plate and the stud are connected in a welding mode.
The steel concrete combined shear wall can be prefabricated in various forms such as type, type + or type □ in a factory, and is formed by pouring concrete after one or more steel concrete combined pipes are assembled.
The outer side wall of the steel-concrete combined shear wall adopts the steel plate with the ribbed ribs, the contact area of steel and concrete is increased through the tie ribs to enhance the integrity of the steel-concrete combined shear wall, the reinforcing mesh sheets which are not in contact with the outer side wall of the rectangular cylindrical structural steel plate are arranged on the outer sides of the periphery of the rectangular cylindrical structural steel plate, so that the combination of concrete wrapped on the outer side of the rectangular cylindrical structural steel plate and the rectangular cylindrical structural steel plate is firmer, the deformation resistance of the steel-concrete combined shear wall is improved, and the outer concrete is wrapped on the inner side and the outer side of the rectangular cylindrical structural steel plate, so that the steel-concrete combined shear wall can prevent fire and resist corrosion, and the structural durability is greatly improved.
The connecting lug plates of the field-mounted vertical connecting structure are respectively connected with the lower welding lug plates and the upper welding lug plates through the lower connecting bolts and the upper connecting bolts in a fastening mode, and the connecting mode is convenient to assemble. After the installation and connection in the mode, the vertical rear insertion anchoring ribs are respectively welded with the tie bars at the upper part and the tie bars at the lower part. Therefore, two vertically adjacent steel concrete combined shear walls are reliably connected into a whole.
The horizontal connecting structure for field installation only adopts a plurality of horizontal rear insertion anchoring ribs which are correspondingly inserted into two adjacent steel concrete composite pipes and are poured into a whole, the two horizontal rear insertion anchoring ribs which are at the same height and are inserted into the same through hole are horizontally arranged along the left and right direction and are welded with adjacent tie bars in the two adjacent steel concrete composite pipes into a whole, in addition, the left end part or the right end part of a rectangular cylindrical structural steel plate is exposed to the outside according to the requirement of a design drawing when the steel concrete composite pipes are prefabricated in a factory, in order to enhance the firmness of horizontal connection, the connecting seams between the adjacent rectangular cylindrical structural steel plates are welded firstly, and then the inner concrete is poured, so that the connecting strength between the two adjacent steel concrete composite pipes can be fully enhanced by the inner concrete through the through holes; the T-shaped nails and the small reinforcing meshes are arranged, so that the reliability of the poured plugging concrete can be ensured, and the effect of correspondingly enhancing horizontal connection is also achieved. The structure and the construction mode of the on-site installation horizontal connection structure are convenient to operate, the connection mode can ensure that the front parts of the two adjacent steel concrete combined pipes are kept flush, the dislocation of the two adjacent steel concrete superposed shear walls is avoided, and the connection strength and the reliability are high.
The two ends of the connecting steel beam are connected with the steel concrete combined shear wall through the node connecting structure, the members adopted by the node connecting structure are also embedded structures, and the embedded transverse plates and the embedded reinforcing ribs are embedded in the inner concrete to play the roles of compression resistance and tensile resistance. The welding connection plate plays a role in connecting, fastening and connecting the steel beam. Go up the reinforcing plate and play the effect of reinforcing welded connection board with lower reinforcing plate, make the connection girder steel have good stability and reliability.
In conclusion, the inner concrete, the outer concrete and the reinforcing mesh form the integral steel-concrete combined shear wall through the tie bars and the steel plate with the ribs on the inner side, and the integral steel-concrete combined shear wall works together, so that the ductility and the compressive strength of the concrete are greatly improved, the plasticity and the toughness of the integral steel-concrete combined shear wall structure are greatly improved, the deformation resistance and the compressive strength of the shear wall are greatly improved, and meanwhile, the fireproof and anti-corrosion problems of the steel structure building are effectively solved because the steel plate with the ribs is wrapped in the concrete.
Drawings
FIG. 1 is a schematic horizontal section of a steel-concrete combined shear wall body when a ribbed steel plate is adopted as a rectangular tubular structural steel plate in the invention;
FIG. 2 is a schematic horizontal section of a steel-concrete combined shear wall body when a rectangular cylindrical structural steel plate adopts a profiled steel plate;
FIG. 3 is a schematic vertical cross-section of a reinforced concrete combined shear wall according to the present invention;
FIG. 4 is a schematic view of a field-installed vertical connection structure between two vertically adjacent sections of the reinforced concrete combined shear wall according to the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
FIG. 6 is a schematic view of a field-installed horizontal connection structure between two horizontally adjacent sections of steel-concrete superimposed shear walls according to the present invention;
FIG. 7 is a cross-sectional view B-B of FIG. 6;
FIG. 8 is a schematic top view of the connection between the connecting steel beams and the steel-concrete composite shear wall through the node connection structure;
fig. 9 is a schematic elevation view of the connection between the connecting steel beam and the steel-concrete superimposed shear wall body through the node connection structure.
Detailed Description
The first embodiment is as follows: as shown in fig. 1, 3-9, the construction method of the factory-prefabricated reinforced concrete superposed shear wall fabricated building comprises the following steps:
(1) designing a plurality of sections of steel concrete combined shear walls and connecting steel beams 13 according to the requirements of construction drawings, wherein the steel concrete combined shear walls are formed by connecting steel concrete combined pipes with rectangular cross sections to form the shear walls with the cross sections of the outer contours, and pouring in-pipe concrete after the types of steel concrete combined pipes are changed into the types of L, S or □;
(2) prefabricating the steel concrete combined pipe in a factory in sections according to the requirements of a drawing;
(3) transporting the prefabricated steel concrete composite pipe to a construction site;
(4) and constructing layer by layer from bottom to top according to the following procedures: firstly, hoisting the steel concrete combined pipe in place, and sequentially butting the steel concrete combined pipe horizontally and vertically to form a firm and stable structural system; the two sections of horizontally adjacent steel concrete combined shear walls are connected through a field-mounted horizontal connecting structure, and the two sections of vertically adjacent steel concrete combined shear walls are connected through a field-mounted vertical connecting structure; two ends of the connecting steel beam 13 are fixedly arranged between the opposite steel concrete combined shear walls, and two ends of the connecting steel beam 13 are connected with the steel concrete combined shear walls through the node connecting structure; laying a laminated floor slab or a steel bar truss floor bearing plate on the connecting steel beam 13; pouring inner concrete in an inner cavity of the steel concrete composite pipe, and pouring concrete at the positions of the on-site installation vertical connecting structure, the on-site installation horizontal connecting structure and the node connecting structure; laying steel bars on the surface of the laminated floor slab or the steel bar truss floor support plate and pouring concrete;
the concrete process of prefabricating the steel concrete combined pipe in the factory in the step (2) is as follows:
a. cutting a ribbed steel plate with specified length and width according to the requirements of construction drawings;
the ribbed steel plate has several ribs pressed on its surface, each rib has semi-circular, elliptic, triangular and trapezoidal cross section, and is set along the vertical and/or horizontal direction of the steel-concrete composite pipe, and all the ribs are uniformly arranged along the circumferential and/or vertical direction of the steel-concrete composite pipe;
b. bending the ribbed steel plate into a rectangular cylindrical structure steel plate 1 and welding the ribbed steel plate at a connecting seam, wherein two long sides of the rectangular steel-concrete composite pipe are respectively the inner side and the outer side of the rectangular cylindrical structure steel plate 1, and two short sides of the rectangular steel-concrete composite pipe are respectively the left side and the right side of the rectangular cylindrical structure steel plate 1;
c. the inner side surface and the outer side surface of the rectangular cylindrical structural steel plate 1 are respectively provided with a plurality of long holes 30 which are arranged in a rectangular array, and the long holes 30 on the inner side surface and the long holes 30 on the outer side surface of the rectangular cylindrical structural steel plate 1 are in one-to-one internal-external correspondence; the length direction of each long hole 30 is horizontally arranged, the left end and the right end of each long hole 30 are respectively provided with a first arc-shaped groove 31 and a second arc-shaped groove 32, the diameter of the first arc-shaped groove 31 is equal to the width of the left end part of the long hole 30, and the diameter of the second arc-shaped groove 32 is equal to or larger than the width of the right end part of the long hole 30;
d. the tie bars 2 are respectively inserted into the long holes 30 which are internally and externally in one-to-one correspondence, the width of the long holes 30 is consistent from left to right or gradually increased, the tie bars 2 are made of twisted steel, the outer diameter of the tie bars 2 is smaller than or equal to the diameter of the first arc-shaped grooves 31, the inner ends and the outer ends of the tie bars 2 respectively extend out of the rectangular cylindrical structural steel plate 1 towards two sides, the tie bars 2 are firstly inserted into the two second arc-shaped grooves 32, and force towards the first arc-shaped grooves 31 is applied to the two ends of the tie bars 2, so that the tie bars 2 move and are fastened into the two first arc-shaped grooves 31;
e. the reinforcing mesh 3 with the rectangular cross section is arranged on the periphery of the outer part of the rectangular tubular structure steel plate 1, a gap is formed between the reinforcing mesh 3 and the rectangular tubular structure steel plate 1, the inner side surface and the outer side surface of the reinforcing mesh 3 are respectively and fixedly connected to the inner end and the outer end of the tie bar 2, and the left side surface and the right side surface of the reinforcing mesh 3 are respectively and fixedly connected with the left side surface and the right side surface of the rectangular tubular structure steel plate 1 through studs;
f. respectively pouring outer concrete 6 around the outer part of the rectangular cylindrical structural steel plate 1 to condense the reinforcing mesh 3; the outer concrete 6, the reinforcing mesh 3 and the rectangular cylindrical structural steel plate 1 form a reinforced concrete combined pipe through the tie bars 2.
The horizontal connecting structure installed on site in the step (4) comprises a plurality of horizontal rear inserting anchoring ribs 12, the left side part of the rectangular cylindrical structural steel plate 1 of one horizontally adjacent steel concrete combined pipe and the right side part of the rectangular cylindrical structural steel plate 1 of the other horizontally adjacent steel concrete combined pipe are exposed outside when being prefabricated in a factory, and a plurality of through holes 33 are uniformly formed in the left side surface or the right side surface of the rectangular cylindrical structural steel plate 1 exposed outside in the factory from top to bottom; when two horizontally adjacent reinforced concrete combined pipes are butted on site, the right side surface of the rectangular cylindrical structural steel plate 1 of the left reinforced concrete combined pipe is jointed with the left side surface of the rectangular cylindrical structural steel plate 1 of the right reinforced concrete combined pipe, the through holes 33 are communicated in a one-to-one correspondence manner, the vertical connecting seam between the two rectangular cylindrical structural steel plates 1 is welded, then two horizontal rear insertion anchoring ribs 12 are arranged in each through hole 33 in a penetrating manner, the horizontal rear insertion anchoring ribs 12 are horizontally arranged along the left and right directions, and the left and right ends of the horizontal rear insertion anchoring ribs 12 respectively extend into the left and right rectangular cylindrical structural steel plates 1 and are placed on the adjacent tie ribs 2 to be welded or bound with the tie ribs 2 into a whole; secondly, welding a plurality of T-shaped nails 36 on the left side and the right side of the welding seams at the inner side and the outer side of each two adjacent rectangular tubular structural steel plates 1, arranging rectangular small reinforcing meshes 34 on the T-shaped nails 36, and pouring plugging concrete 35 outside the small reinforcing meshes 34 and the T-shaped nails 36, wherein the plugging concrete 35 is flush with the surface of the outer concrete 6; and finally, when the inner concrete is poured, all the horizontal rear inserting and anchoring ribs 12 are pre-embedded in the inner concrete, and the inner concrete connects the adjacent steel concrete combined pipes into a whole through the through holes 33.
The vertical connecting structure installed on site in the step (4) comprises a plurality of vertical rear inserting anchoring ribs 8, an upper welding lug plate 9, a lower welding lug plate 10 and a connecting lug plate 11, wherein the upper welding lug plate 9 is welded on the left side of the row of tie ribs 2 at the lowest part of the steel concrete composite pipe at the upper part, the lower welding lug plate 10 is welded on the left side of the row of tie ribs 2 at the uppermost part of the steel concrete composite pipe at the lower part, the upper welding lug plate 9 and the lower welding lug plate 10 are vertically arranged and vertically correspond to each other one by one, the connecting lug plate 11 is tightly attached to the left side surfaces of the upper welding lug plate 9 and the lower welding lug plate 10, the upper part of the connecting lug plate 11 is fixedly connected with the upper welding lug plate 9 through an upper connecting bolt, the lower part of the connecting lug plate 11 is fixedly connected with the lower welding lug plate 10 through a lower connecting bolt, the vertical rear inserting anchoring ribs 8 are vertically arranged, the upper part of the left side of the vertical rear inserting anchoring ribs 8 is, the lower part of the left side of the vertical rear insertion anchoring rib 8 is welded with the right side of the row of tie ribs 2 on the uppermost part of the steel concrete combined pipe on the lower part.
The joint connecting structure in the step (4) comprises an embedded vertical plate 14, an embedded transverse plate 15, a welding connecting plate 16, an embedded reinforcing rib 17, an upper reinforcing plate 20 and a lower reinforcing plate 21, and the cross section of the connecting steel beam 13 is H or square; an unfired area 18 is reserved at the outer side of the steel-concrete combined shear wall body, a mounting hole corresponding to the unfired area 18 is formed in the steel-concrete combined pipe, the embedded vertical plate 14 is matched with the mounting hole in size and is located in the mounting hole, the embedded reinforcing ribs 17 and the embedded transverse plates 15 are both arranged inside the steel-concrete combined pipe in the horizontal direction, the outer ends of the embedded reinforcing ribs 17 and the outer sides of the embedded transverse plates 15 are both fixedly connected with the inner side faces of the embedded vertical plates 14, the embedded transverse plates 15 are located above and below the embedded reinforcing ribs 17, the welding connecting plates 16 are located inside the unfired area 18 and are arranged in the vertical direction, the inner side faces of the welding connecting plates 16 are fixedly connected with the outer side faces of the embedded vertical plates 14, and the welding connecting plates 16 are connected with an intermediate plate of the connecting; the lower surface of the upper reinforcing plate 20 is fixedly connected with the upper side edge of the welding connection plate 16, the upper surface of the lower reinforcing plate 21 is fixedly connected with the lower side edge of the welding connection plate 16, and the inner side edges of the upper reinforcing plate 20 and the lower reinforcing plate 21 are fixedly connected with the outer side surface of the embedded vertical plate 14.
When the inner concrete is poured, the tie bars 2, the vertical rear insertion anchoring bars 8 and the horizontal rear insertion anchoring bars 12 are poured into the inner concrete, and the steel wire mesh sheets, the welding connection plates 16, the end parts of the connection steel beams 13, the upper welding lug plates 9, the lower welding lug plates 10 and the connection lug plates 11 are poured into the outer concrete 6.
The steel concrete combined shear wall is formed by connecting steel concrete combined pipes and pouring concrete 5 in the pipes, wherein the steel concrete combined pipes comprise rectangular cylindrical structural steel plates 1, tie bars 2, studs 4, reinforcing mesh sheets 3 and external concrete 6 wrapped outside the reinforcing mesh sheets, and are prefabricated in a factory; and pouring the inner concrete 5 in the cavity inside the rectangular cylindrical structural steel plate 1 on the construction site.
The rectangular tubular structure steel plate 1 is formed by bending and welding the ribbed steel plate, the ribbed steel plate is provided with the ribs 7 by pressing in a factory, the strength of the steel plate is increased, the thickness of the steel plate is reduced, the binding force of concrete and the steel plate is increased, the strength and the deformation resistance of the rectangular tubular structure steel plate 1 are improved, and the purposes of reducing the steel consumption and saving resources are achieved.
The steel plate with the rib 7, the tie bars 2, the studs 4, the reinforcing mesh 3 and the externally wrapped external concrete 6 are mutually constrained to increase the tensile strength and the compressive strength of the member, and the steel concrete combined pipe without pouring the concrete in the pipe is used for bearing construction load and wind load in the installation stage, so that the weight of a single member is reduced, and the cost of transportation and hoisting operation is greatly reduced.
The steel concrete combined shear wall structure is formed by casting the inner concrete 5 in the cavity inside the steel concrete combined tube on site. The inner concrete 5, the outer concrete 6 and the reinforcing mesh 3 are integrated with the steel plate with the rib 7 on the inner side through the tie bars 2, the geometric stability of the steel plate wall is enhanced by utilizing the constraint action of the inner concrete and the outer concrete, the instability mode of the steel plate with the rib 7 is changed, the local buckling of the steel plate with the rib 7 is avoided or delayed, meanwhile, the strength of the concrete is improved by utilizing the constraint action of the prefabricated rectangular tubular structural steel plate 1 on the concrete in the integral structure, the plasticity and the toughness are greatly improved, and the compressive strength and the ductility are also greatly improved. The assembled structure of the steel-concrete combined shear wall ensures the full play of the performance of all wall materials.
In the slot hole 30 that drawknot muscle 2 inserted 1 inboard and outside of rectangle tubular structure steel sheet and corresponds, drawknot muscle 2 penetrates in two second arc walls 32 that are greater than drawknot muscle 2 diameter earlier, and horizontal migration is in two first arc walls 31 and the fastening is in first arc wall 31 again, and this kind of mounting means is convenient for operate, connects reliably. In addition, because the width of slot hole 30 is all unanimous or crescent and drawknot muscle 2 adopts the twisted steel from left to right, can improve joint intensity and reliability between drawknot muscle 2 and the first arc groove 31 like this, ensure the distance between the 1 inboard of rectangle tubular structure steel sheet and the outside and keep stable. The rectangular cylindrical structural steel plate 1 and the stud 4 are connected in a welding mode.
The steel concrete combined shear wall can be prefabricated in various forms such as type, type + or type □ in a factory, and is formed by pouring concrete after one or more steel concrete combined pipes are assembled.
The construction process of the shear wall is simplified, the construction progress is improved, the outer side wall of the steel-concrete combined shear wall adopts the steel plate with the ribbed ribs 7, the contact area of steel and concrete is increased through the tie bars 2, the integrity of the steel-concrete combined shear wall is enhanced, the outer side of the rectangular cylindrical structural steel plate 1 is provided with the reinforcing mesh 3 which is not in contact with the outer side wall of the rectangular cylindrical structural steel plate 1, the combination of the concrete wrapped on the outer side of the rectangular cylindrical structural steel plate 1 and the rectangular cylindrical structural steel plate 1 is firmer, the deformation resistance of the steel-concrete combined shear wall is improved, and the outer concrete 6 is wrapped on the inner side and the outer side of the rectangular cylindrical structural steel plate 1, so that the steel-concrete combined shear wall can prevent fire and resist corrosion, and the structural durability is greatly improved.
The connecting lug plates 11 of the field-mounted vertical connecting structure are respectively and fixedly connected with the lower welding lug plates 10 and the upper welding lug plates 9 through lower connecting bolts and upper connecting bolts, and the connecting mode is convenient to assemble. After the installation and connection in the mode, the vertical rear insertion anchoring ribs 8 are respectively welded with the tie bars 2 at the upper part and the tie bars 2 at the lower part. Therefore, two vertically adjacent steel concrete combined shear walls are reliably connected into a whole.
The horizontal connecting structure for field installation only adopts a plurality of horizontal rear insertion anchoring ribs 12 which are correspondingly inserted into two adjacent steel concrete composite pipes and are cast into a whole, the two horizontal rear insertion anchoring ribs 12 which are at the same height and are inserted into the same through hole 33 are horizontally arranged along the left and right direction and are welded into a whole with adjacent tie bars 2 in the two adjacent steel concrete composite pipes, in addition, when the steel concrete composite pipes are prefabricated in a factory, the left end part or the right end part of a rectangular cylindrical structural steel plate 1 is exposed to the outside according to the requirement of a design drawing, in order to enhance the firmness of horizontal connection, the connecting seams between the adjacent rectangular cylindrical structural steel plates 1 are welded, and then inner concrete is poured, and the connecting strength between the two adjacent steel concrete composite pipes can be fully enhanced by the inner concrete through the through hole 33; the arrangement of the T-shaped nails 36 and the small steel bar meshes 34 can ensure the reliability of the poured plugging concrete 35 and also play a role in correspondingly strengthening the horizontal connection. The structure and the construction mode of the on-site installation horizontal connection structure are convenient to operate, the connection mode can ensure that the front parts of the two adjacent steel concrete combined pipes are kept flush, the dislocation of the two adjacent steel concrete superposed shear walls is avoided, and the connection strength and the reliability are high.
The two ends of the connecting steel beam 13 are connected with the steel concrete combined shear wall through a node connecting structure, the members adopted by the node connecting structure are also embedded structures, and the embedded transverse plates 15 and the embedded reinforcing ribs 17 are embedded in the inner concrete 5 to play a role in compression resistance and tensile resistance. The welding connection plate 16 serves to connect and fasten the steel beam 13.
Example two: as shown in fig. 2, the present embodiment is different from the first embodiment in that a rectangular tubular structural steel sheet 1 is formed by bending and welding a profiled steel sheet, and the cross section of the profiled steel sheet has a triangular shape, a trapezoidal shape, an arc shape, a wavy line or a zigzag line shape.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (2)
1. The construction method of the prefabricated steel concrete superposed shear wall assembly type building in a factory is characterized in that: the method comprises the following steps:
(1) designing a plurality of sections of steel concrete combined shear walls and connecting steel beams according to the requirements of construction drawings, wherein the steel concrete combined shear walls are formed by connecting steel concrete combined pipes with rectangular cross sections to form shear walls formed by pouring in-pipe concrete after the cross sections of the pipes are of type I, type II or type III or type □;
(2) prefabricating the steel concrete combined pipe in a factory in sections according to the requirements of a drawing;
(3) transporting the prefabricated steel concrete composite pipe to a construction site;
(4) and constructing layer by layer from bottom to top according to the following procedures: firstly, hoisting the steel concrete combined pipe in place, and sequentially butting the steel concrete combined pipe horizontally and vertically to form a firm and stable structural system; the two sections of horizontally adjacent steel concrete combined shear walls are connected through a field-mounted horizontal connecting structure, and the two sections of vertically adjacent steel concrete combined shear walls are connected through a field-mounted vertical connecting structure; two ends of the connecting steel beam are fixedly arranged between the opposite steel concrete combined shear walls, and two ends of the connecting steel beam are connected with the steel concrete combined shear walls through the node connecting structure; laying a laminated floor slab or a steel bar truss floor bearing plate on the connecting steel beam; pouring inner concrete in an inner cavity of the steel concrete composite pipe, and pouring concrete at the positions of the on-site installation vertical connecting structure, the on-site installation horizontal connecting structure and the node connecting structure; laying steel bars on the surface of a laminated floor slab or a steel bar truss floor support plate and pouring concrete;
the concrete process of prefabricating the steel concrete composite pipe in the step (2) comprises the following steps:
a. cutting a ribbed steel plate or a profiled steel plate with specified length and width according to the requirements of construction drawings;
the ribbed steel plate has several ribs pressed on its surface, each rib has semi-circular, elliptic, triangular and trapezoidal cross section, and is set along the vertical and/or horizontal direction of the steel-concrete composite pipe, and all the ribs are uniformly arranged along the circumferential and/or vertical direction of the steel-concrete composite pipe;
the cross section of the profiled steel sheet is in a shape of triangle, trapezoid, arc, wavy line or fold line;
b. bending the ribbed steel plate or the profiled steel plate into a rectangular cylindrical structure steel plate and welding the rectangular cylindrical structure steel plate at a connecting seam, wherein two long sides of the rectangular structure steel concrete combined pipe are respectively the inner side and the outer side of the rectangular cylindrical structure steel plate, and two short sides of the rectangular structure steel concrete combined pipe are respectively the left side and the right side of the rectangular cylindrical structure steel plate;
c. the inner side surface and the outer side surface of the rectangular cylindrical structural steel plate are respectively provided with a plurality of long holes which are arranged in a rectangular array, and the long holes on the inner side surface and the long holes on the outer side surface of the rectangular cylindrical structural steel plate are in one-to-one internal-external correspondence; the length direction of each long hole is horizontally arranged, the left end and the right end of each long hole are respectively provided with a first arc-shaped groove and a second arc-shaped groove, the diameter of each first arc-shaped groove is equal to the width of the left end part of each long hole, and the diameter of each second arc-shaped groove is larger than the width of the right end part of each long hole;
d. the tie bars are respectively inserted in the long holes which are in one-to-one correspondence with the inside and the outside, the outer diameter of each tie bar is equal to the diameter of the first arc-shaped groove, the inner ends and the outer ends of the tie bars respectively extend out of the rectangular cylindrical structural steel plates to the two sides, the tie bars are firstly inserted into the two second arc-shaped grooves, and force towards the first arc-shaped grooves is applied to the two ends of each tie bar, so that the tie bars are moved and fastened into the two first arc-shaped grooves;
e. the steel bar net piece with the cross section in a rectangular structure is arranged on the periphery of the outer part of the rectangular cylindrical structure steel plate, a gap is formed between the steel bar net piece and the rectangular cylindrical structure steel plate, the inner side surface and the outer side surface of the steel bar net piece are respectively and fixedly connected to the inner end and the outer end of the tie bar, and the left side surface and the right side surface of the steel bar net piece are respectively and fixedly connected with the left side surface and the right side surface of the rectangular cylindrical structure steel plate through studs;
f. respectively pouring outer concrete around the outer part of the rectangular cylindrical structural steel plate to condense the reinforcing mesh; the outer concrete and the reinforcing mesh form a reinforced concrete combined pipe through the tie bars and the rectangular cylindrical structural steel plate;
the horizontal connecting structure installed on site in the step (4) comprises a plurality of horizontal rear inserting anchoring ribs, the left side part of the rectangular cylindrical structural steel plate of one horizontally adjacent reinforced concrete combined pipe and the right side part of the rectangular cylindrical structural steel plate of the other horizontally adjacent reinforced concrete combined pipe are exposed outside when being prefabricated in a factory, and a plurality of through holes are uniformly formed in the left side surface or the right side surface of the rectangular cylindrical structural steel plate exposed outside from top to bottom in the factory; when two horizontally adjacent steel concrete combined pipes are butted on site, the right side surface of the rectangular cylindrical structure steel plate of the left steel concrete combined pipe is attached to the left side surface of the rectangular cylindrical structure steel plate of the right steel concrete combined pipe, the through holes are communicated in a one-to-one correspondence manner, the vertical connecting seam between the two rectangular cylindrical structure steel plates is welded, two horizontal rear insertion anchoring ribs are arranged in each through hole in a penetrating manner, the horizontal rear insertion anchoring ribs are horizontally arranged along the left and right directions, and the left and right ends of the horizontal rear insertion anchoring ribs respectively extend into the left and right rectangular cylindrical structure steel plates and are placed on the adjacent tie ribs to be welded or bound with the tie ribs into a whole; welding a plurality of T-shaped nails on the left side and the right side of the welding seam between the inner side and the outer side of each two adjacent rectangular tubular structural steel plates, arranging rectangular small reinforcing meshes on the T-shaped nails, and pouring plugging concrete outside the small reinforcing meshes and the T-shaped nails, wherein the plugging concrete is flush with the surface of the outer concrete; finally, when the inner concrete is poured, all the horizontal rear insertion anchoring ribs are embedded in the inner concrete, and the inner concrete connects the adjacent steel concrete combined pipes into a whole through the through holes;
the on-site installation of the vertical connecting structure in the step (4) comprises a plurality of vertical rear insertion anchoring ribs and upper welding lug plates, the lower welding lug plate and the connecting lug plate are welded, the upper welding lug plate is welded on the left side of the row of tie bars at the lowest part of the steel concrete combined pipe at the upper part, the lower welding lug plate is welded on the left side of the row of tie bars at the uppermost part of the steel concrete combined pipe at the lower part, the upper welding lug plate and the lower welding lug plate are both vertically arranged and vertically correspond to each other one by one, the connecting lug plate is tightly attached to the left side surfaces of the upper welding lug plate and the lower welding lug plate, the upper part of the connecting lug plate is fixedly connected with the upper welding lug plate through an upper connecting bolt, the lower part of the connecting lug plate is fixedly connected with the lower welding lug plate through a lower connecting bolt, the vertical rear inserting anchoring rib is vertically arranged, the upper part of the left side of the vertical rear inserting anchoring rib is welded with the right side of the row of tie bars at the lowest part of the steel concrete combined pipe at the upper part;
the joint connecting structure in the step (4) comprises an embedded vertical plate, an embedded transverse plate, a welding connecting plate, an embedded reinforcing rib, an upper reinforcing plate and a lower reinforcing plate, wherein the cross section of the connecting steel beam is H or mouth-shaped; the outer side of the steel concrete combined shear wall is reserved with an unfired area, the steel concrete combined tube is provided with a mounting hole corresponding to the unfired area, the embedded vertical plate is matched with the mounting hole in size and is positioned in the mounting hole, the embedded reinforcing ribs and the embedded transverse plates are both arranged inside the steel concrete combined tube along the horizontal direction, the outer ends of the embedded reinforcing ribs and the outer side edges of the embedded transverse plates are both fixedly connected with the inner side surfaces of the embedded vertical plates, the embedded transverse plates are positioned above and below the embedded reinforcing ribs, the welding connecting plates are positioned inside the unfired area and are arranged along the vertical direction, the inner side edges of the welding connecting plates are fixedly connected with the outer side surfaces of the embedded vertical plates, and the welding connecting plates are connected with an intermediate plate for connecting steel beams; the lower surface of the upper reinforcing plate is fixedly connected with the upper side edge of the welding connecting plate, the upper surface of the lower reinforcing plate is fixedly connected with the lower side edge of the welding connecting plate, and the inner side edges of the upper reinforcing plate and the lower reinforcing plate are fixedly connected with the outer side surface of the embedded vertical plate;
the width of the long hole is gradually increased from left to right, and the tie bar is made of a threaded steel bar.
2. The factory-prefabricated steel concrete superposed shear wall fabricated building construction method according to claim 1, is characterized in that: when the inner concrete is poured, the tie bars, the vertical rear insertion anchoring bars and the horizontal rear insertion anchoring bars are poured into the inner concrete, and the steel wire mesh sheets, the welding connecting plates, the end parts of the connecting steel beams, the upper welding lug plates, the lower welding lug plates and the connecting lug plates are poured into the outer concrete.
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| CN112554369B (en) * | 2020-12-17 | 2024-05-28 | 西北民族大学 | Profiled steel lining plate combined reinforced concrete cavity superimposed shear wall and production method thereof |
| CN113431412B (en) * | 2021-07-01 | 2022-08-26 | 重庆大学 | Assembled double-layer corrugated steel plate composite shear wall and splicing method thereof |
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